Welcome to the world of Turner Performance.

We have been tuning and modifying cars since the mid 70's so have knowledge and experience that other businesses can only admire.

With our own in-house Rolling Road Dyno (Dynamometer) you can be sure that all our tuning software is exactly what we claim, any performance data is from our rolling road. We are the only remapping company in Hertfordshire that have their own rolling road and write their software in-house. Most "remappers" are just installers of other peoples files, which are often not specific to that particular vehicle, our Custom Software is unique to each and every car.

We are actively involved in the modifying scene and members of many groups, clubs and forums, keeping us up to date with current trends.

The tuning and modifying industry is unfortunately full of companies selling and fitting products based upon hype, not facts, we are able to supply and install a wide range of products and offer friendly informed advise about potential mods on our customers cars.

Just some of the many vehicle makes that we regularly perform our magic on